[INFO] cloning repository https://github.com/numoonchld/rust-essentials [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/numoonchld/rust-essentials" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 120761ae47909a4034752771392faa59f019625b [INFO] building numoonchld/rust-essentials against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnumoonchld%2Frust-essentials" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/numoonchld/rust-essentials on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/numoonchld/rust-essentials [INFO] finished tweaking git repo https://github.com/numoonchld/rust-essentials [INFO] tweaked toml for git repo https://github.com/numoonchld/rust-essentials written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/numoonchld/rust-essentials already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 91dae4f1ae79e62b2987493e400e4760a56f383af6c1867d491162010ff6c5dc [INFO] running `Command { std: "docker" "start" "-a" "91dae4f1ae79e62b2987493e400e4760a56f383af6c1867d491162010ff6c5dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "91dae4f1ae79e62b2987493e400e4760a56f383af6c1867d491162010ff6c5dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91dae4f1ae79e62b2987493e400e4760a56f383af6c1867d491162010ff6c5dc", kill_on_drop: false }` [INFO] [stdout] 91dae4f1ae79e62b2987493e400e4760a56f383af6c1867d491162010ff6c5dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5b08f9dd0c1c2d9eeedbf218e65bd960aeee0a287934eac2c80e17503f1b64c9 [INFO] running `Command { std: "docker" "start" "-a" "5b08f9dd0c1c2d9eeedbf218e65bd960aeee0a287934eac2c80e17503f1b64c9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.17 [INFO] [stderr] Compiling getrandom v0.2.10 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling rust-essentials v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `vehicle2` [INFO] [stdout] --> src/k_structs.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vehicle2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/k_structs.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `1` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:64:18 [INFO] [stdout] | [INFO] [stdout] 64 | struct Color(u8, u8, u8); //RGB [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:65:14 [INFO] [stdout] | [INFO] [stdout] 65 | struct Point(u8, u8, u8); //XYZ-point [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 65 | struct Point((), u8, ()); //XYZ-point [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/i_modules.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | io::stdin().read_line(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 7 | let _ = io::stdin().read_line(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | fs::write("speech.txt", speech); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = fs::write("speech.txt", speech); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | file.write(b"\npluto"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = file.write(b"\npluto"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.45s [INFO] running `Command { std: "docker" "inspect" "5b08f9dd0c1c2d9eeedbf218e65bd960aeee0a287934eac2c80e17503f1b64c9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b08f9dd0c1c2d9eeedbf218e65bd960aeee0a287934eac2c80e17503f1b64c9", kill_on_drop: false }` [INFO] [stdout] 5b08f9dd0c1c2d9eeedbf218e65bd960aeee0a287934eac2c80e17503f1b64c9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fec7bff50f36bfe2828f92f6a7b0ae31f94290fabc0c2087fd3c4e5e1edad20b [INFO] running `Command { std: "docker" "start" "-a" "fec7bff50f36bfe2828f92f6a7b0ae31f94290fabc0c2087fd3c4e5e1edad20b", kill_on_drop: false }` [INFO] [stderr] Compiling rust-essentials v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `vehicle2` [INFO] [stdout] --> src/k_structs.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vehicle2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/k_structs.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut vehicle2 = Shuttle::new("Discovery"); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `1` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:64:18 [INFO] [stdout] | [INFO] [stdout] 64 | struct Color(u8, u8, u8); //RGB [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `2` are never read [INFO] [stdout] --> src/k_structs.rs:65:14 [INFO] [stdout] | [INFO] [stdout] 65 | struct Point(u8, u8, u8); //XYZ-point [INFO] [stdout] | ----- ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 65 | struct Point((), u8, ()); //XYZ-point [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/i_modules.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | io::stdin().read_line(&mut buffer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 7 | let _ = io::stdin().read_line(&mut buffer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | fs::write("speech.txt", speech); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = fs::write("speech.txt", speech); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/j_input_output.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | file.write(b"\npluto"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = file.write(b"\npluto"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s [INFO] running `Command { std: "docker" "inspect" "fec7bff50f36bfe2828f92f6a7b0ae31f94290fabc0c2087fd3c4e5e1edad20b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fec7bff50f36bfe2828f92f6a7b0ae31f94290fabc0c2087fd3c4e5e1edad20b", kill_on_drop: false }` [INFO] [stdout] fec7bff50f36bfe2828f92f6a7b0ae31f94290fabc0c2087fd3c4e5e1edad20b